Question

Evaluate the following using properties of perfect sqaure 29^2-28^2

Answer 1

ANSWER:- 29^2 - 28^ 2 =57

EXPLANATION:-

WE ALL KNOW THAT a^2-b^2= (a+b)(a-b)

so,

29^2 - 28^ 2 =(29+28)(29-28)=(57)(1)=57

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